Telephone base unit



FIG. 1 is a top view of the telephone base unit;

FIG. 2 is a left side view of the telephone base unit;

FIG. 3 is a front view of the telephone base unit;

FIG. 4 is a rear view of the telephone base unit;

FIG. 5 is a left-front perspective view of the telephone base unit; and,

FIG. 6 is a right-rear perspective view of the telephone base unit. 

The ornamental design for telephone base unit, as shown and described. 